Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Patent
1989-12-07
1991-12-10
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Transformer in the supply circuit
315226, 315289, 315DIG7, 331110, H05B 4116
Patent
active
050721593
ABSTRACT:
A lamp driver circuit includes a high voltage secondary winding connectable to a gas discharge lamp. The secondary is wound on a magnetic core together with a pair of primary windings. The primary windings are coupled to one another as well as to an R-C network and an amplifier stage, the latter of which comprises a plurality of fast-switching transistors connected in parallel with one another. The bases of each of the transistors are connected to the R-C network by way of an element such as an incandescent lamp filament whose resistance varies with the current through the element.
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Dinh Son
LaRoche Eugene R.
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